Air Recirculation Malfunction

TEST DESCRIPTION

Steps 1-7:

Steps 8-18:

The numbers below refer to the step numbers on the diagnostic table.
9. The HVAC control assembly is supplied by two ignition 3 voltage circuits. Test the ignition 3 voltage circuit that does not supply the blower motor switch.

For a description of the RPO Code(s) shown in this article/images refer to the RPO Code List found at Vehicle/Application ID RPO Codes